Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
91156 (1998 QS60)
Classification: Main-belt Asteroid          SPK-ID: 2091156
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09199700321641993 5.1212e-08  
a 3.19689295851214 3.6944e-08 au
q 2.902788386725349 1.7455e-07 au
i 11.30026472684754 6.4176e-06 deg
node 334.0601706665441 2.897e-05 deg
peri 293.86107602676 4.6617e-05 deg
M 349.6570650008041 3.8502e-05 deg
tp 2459060.483508429894
(2020-Jul-29.98350843)
0.0002236 TDB
period 2087.808058006795
5.72
3.6191e-05
9.909e-08
d
yr
n .172429643912615 2.989e-09 deg/d
Q 3.490997530298932 4.0343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57468  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:20:57  

Additional Information
 Earth MOID = 1.91039 au 
 Jupiter MOID = 1.7956 au 
 T_jup = 3.158 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO348071  
rotation period rot_per 13.121 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

91156 (1998 QS60)          Discovered 1998-Aug-31 by Galad, A., Toth, J. at Modra
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 08:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin